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Finding the Fourth Proportional to 9,987.48, 14,983.14 and 3,831

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Solution

The fourth proportional to 9,987.48, 14,983.14 and 3,831 is: 5,747.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.48 : 14,983.14 = 3,831 : x
  2. Step 2: Convert to fraction form
    9,987.48/14,983.14 = 3,831/x
  3. Step 3: Cross multiply
    9,987.48x = 14,983.14 × 3,831
  4. Step 4: Simplify right side
    9,987.48x = 57,400,409.34
  5. Step 5: Solve for x
    x = 57,400,409.34/9,987.48
  6. Step 6: Final answer
    x = 5,747.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.